nexus: Add more placeholder Arch functions
Signed-off-by: David Shah <dave@ds0.me>
This commit is contained in:
David Shah
parent
65a59e9dcc
commit
259659c838
121
nexus/arch.cc
121
nexus/arch.cc
@ -311,4 +311,125 @@ std::vector<std::pair<IdString, std::string>> Arch::getPipAttrs(PipId pip) const
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return ret;
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}
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// -----------------------------------------------------------------------
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std::vector<GraphicElement> Arch::getDecalGraphics(DecalId decal) const
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{
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std::vector<GraphicElement> ret;
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return ret;
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}
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DecalXY Arch::getBelDecal(BelId bel) const
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{
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DecalXY decalxy;
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decalxy.decal.index = -1;
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decalxy.x = 0;
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decalxy.y = 0;
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return decalxy;
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}
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DecalXY Arch::getWireDecal(WireId wire) const { return {}; }
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DecalXY Arch::getPipDecal(PipId pip) const { return {}; };
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DecalXY Arch::getGroupDecal(GroupId pip) const { return {}; };
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// -----------------------------------------------------------------------
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bool Arch::getCellDelay(const CellInfo *cell, IdString fromPort, IdString toPort, DelayInfo &delay) const
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{
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return false;
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}
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TimingPortClass Arch::getPortTimingClass(const CellInfo *cell, IdString port, int &clockInfoCount) const
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{
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return TMG_IGNORE;
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}
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TimingClockingInfo Arch::getPortClockingInfo(const CellInfo *cell, IdString port, int index) const { return {}; }
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// -----------------------------------------------------------------------
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delay_t Arch::estimateDelay(WireId src, WireId dst) const
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{
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int src_x = src.tile % chip_info->width, src_y = src.tile / chip_info->width;
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int dst_x = dst.tile % chip_info->width, dst_y = dst.tile / chip_info->width;
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int dist_x = std::abs(src_x - dst_x);
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int dist_y = std::abs(src_y - dst_y);
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return 100 * dist_x + 100 * dist_y;
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}
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delay_t Arch::predictDelay(const NetInfo *net_info, const PortRef &sink) const
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{
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if (net_info->driver.cell == nullptr || net_info->driver.cell->bel == BelId() || sink.cell->bel == BelId())
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return 0;
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int src_x = net_info->driver.cell->bel.tile % chip_info->width,
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src_y = net_info->driver.cell->bel.tile / chip_info->width;
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int dst_x = sink.cell->bel.tile % chip_info->width, dst_y = sink.cell->bel.tile / chip_info->width;
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int dist_x = std::abs(src_x - dst_x);
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int dist_y = std::abs(src_y - dst_y);
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return 100 * dist_x + 100 * dist_y;
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}
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bool Arch::getBudgetOverride(const NetInfo *net_info, const PortRef &sink, delay_t &budget) const { return false; }
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// -----------------------------------------------------------------------
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bool Arch::pack()
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{
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// FIXME
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getCtx()->attrs[getCtx()->id("step")] = std::string("pack");
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archInfoToAttributes();
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return true;
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}
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bool Arch::place()
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{
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std::string placer = str_or_default(settings, id("placer"), defaultPlacer);
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if (placer == "heap") {
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PlacerHeapCfg cfg(getCtx());
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cfg.criticalityExponent = 7;
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if (!placer_heap(getCtx(), cfg))
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return false;
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} else if (placer == "sa") {
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if (!placer1(getCtx(), Placer1Cfg(getCtx())))
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return false;
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} else {
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log_error("Nexus architecture does not support placer '%s'\n", placer.c_str());
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}
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getCtx()->attrs[getCtx()->id("step")] = std::string("place");
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archInfoToAttributes();
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return true;
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}
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bool Arch::route()
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{
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assign_budget(getCtx(), true);
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bool result = router1(getCtx(), Router1Cfg(getCtx()));
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getCtx()->attrs[getCtx()->id("step")] = std::string("route");
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archInfoToAttributes();
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return result;
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}
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// -----------------------------------------------------------------------
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void Arch::assignArchInfo() {}
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void assignCellInfo(CellInfo *cell) {}
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// -----------------------------------------------------------------------
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#ifdef WITH_HEAP
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const std::string Arch::defaultPlacer = "heap";
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#else
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const std::string Arch::defaultPlacer = "sa";
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#endif
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const std::vector<std::string> Arch::availablePlacers = {"sa",
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#ifdef WITH_HEAP
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"heap"
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#endif
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};
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NEXTPNR_NAMESPACE_END
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21
nexus/arch.h
21
nexus/arch.h
@ -79,7 +79,7 @@ NPNR_PACKED_STRUCT(struct BelInfoPOD {
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int32_t name; // bel name in tile IdString
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int32_t type; // bel type IdString
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int16_t rel_x, rel_y; // bel location relative to parent
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uint32_t z; // bel location absolute Z
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int32_t z; // bel location absolute Z
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RelPtr<BelWirePOD> ports; // ports, sorted by name IdString
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int32_t num_ports; // number of ports
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});
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@ -680,7 +680,22 @@ struct Arch : BaseCtx
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return loc;
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}
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BelId getBelByLocation(Loc loc) const;
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BelId getBelByLocation(Loc loc) const
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{
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BelId ret;
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auto &t = db->loctypes[chip_info->grid[loc.y * chip_info->width + loc.x].loc_type];
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if (loc.x >= 0 && loc.x < chip_info->width && loc.y >= 0 && loc.y < chip_info->height) {
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for (size_t i = 0; i < t.num_bels; i++) {
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if (t.bels[i].z == loc.z) {
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ret.tile = loc.y * chip_info->width + loc.x;
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ret.index = i;
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break;
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}
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}
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}
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return ret;
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}
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BelRange getBelsByTile(int x, int y) const;
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bool getBelGlobalBuf(BelId bel) const { return false; }
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@ -968,7 +983,7 @@ struct Arch : BaseCtx
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// -------------------------------------------------
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delay_t estimateDelay(WireId src, WireId dst, bool debug = false) const;
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delay_t estimateDelay(WireId src, WireId dst) const;
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delay_t predictDelay(const NetInfo *net_info, const PortRef &sink) const;
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delay_t getDelayEpsilon() const { return 20; }
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delay_t getRipupDelayPenalty() const { return 120; }
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30
nexus/arch_place.cc
Normal file
30
nexus/arch_place.cc
Normal file
@ -0,0 +1,30 @@
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/*
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* nextpnr -- Next Generation Place and Route
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*
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* Copyright (C) 2020 David Shah <dave@ds0.me>
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*
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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*/
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#include "log.h"
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#include "nextpnr.h"
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NEXTPNR_NAMESPACE_BEGIN
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bool Arch::isValidBelForCell(CellInfo *cell, BelId bel) const { return true; }
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bool Arch::isBelLocationValid(BelId bel) const { return true; }
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NEXTPNR_NAMESPACE_END
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